Medusa was a monster, a Gorgon, generally described as having the face of a hideous human female with living venomous snakes in place of hair. Gazing directly upon her would turn onlookers to stone. She has two sisters.
10 knowledge check
The head of the Gorgon Medusa
20 knowledge check
Currently in Minoa with Perseus.
30 knowledge check
Casts flesh to stone dc 21 to save 1/round as a cone effect with a range of 60ft